Orion Nebula HST View Versus Ground-Based View

This composite image shows the location of a one light-year square region in the Orion Nebula, which was imaged by WFPC. The area is near the edge of a cavity of ionized hydrogen, which is heated by ultraviolet radiation from a star cluster at the center of the nebula. (Ground-based Orion Nebula photo copyright David Malin/Anglo-Australian Southern Observatory)